Collatz in all languages in chars. Cheevos Holes Recent Holes Langs Medals Misc All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E ALGOL 68 APL Arturo Befunge BQN CJam CoffeeScript Egel Erlang Fennel Harbour Hare Haxe Hush Hy iogii Knight Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table Billiards brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Calendar Connect Four CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers Minesweeper NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Snake Sphenic Numbers Trinomial Triangle Turtle Tutorial # Golfer Points Chars Time 670th alomiF 872 66 1 Sep 2023 670th btnlq 872 66 17 Oct 2023 678th DialFrost 🇸🇬 872 73 3 Jun 2025 679th HPWiz 🇳🇿 871 49 4 May 2022 679th JayXon 🇺🇸 871 49 5 May 2022 679th Steffan153 🇫🇮 871 49 10 Dec 2022 679th ovs-code 🇩🇪 871 49 24 Oct 2023 679th sean-niemann 🇺🇸 871 49 12 Jul 2024 684th c0d3-4-F00d 🇩🇪 871 89 5 May 2022 684th fkantelberg 871 89 15 Jul 2023 684th bac0id 871 89 26 Sep 2023 684th TRexOnGit 871 89 16 Feb 2024 684th arcpolaris 871 89 18 Nov 2024 689th inventshah 871 97 6 May 2022 689th roupiq 🇵🇱 871 97 22 Nov 2023 691st dokutan 870 62 28 Apr 2025 692nd DialFrost 🇸🇬 870 86 24 Oct 2024 692nd stefangimmillaro 870 86 14 Jan 2025 694th janbehrens 🇩🇪 869 90 21 Apr 2023 694th Yewzir 🇧🇪 869 90 22 Apr 2023 694th DialFrost 🇸🇬 869 90 6 Nov 2023 694th Ripick 869 90 27 Nov 2024 698th jacobly0 🇺🇸 869 153 26 Sep 2023 699th GolfingSuccess 🇬🇷 868 71 5 May 2022 699th emplv 🇱🇻 868 71 5 May 2022 699th JayXon 🇺🇸 868 71 7 May 2022 699th m-tkach 🇺🇦 868 71 15 May 2022 699th nwellnhof 🇩🇪 868 71 5 Jun 2022 699th Irratix 🇳🇱 868 71 13 Jun 2022 699th michael-pruglo 🇺🇦 868 71 13 Jul 2022 699th stefangimmillaro 868 71 2 Jun 2023 699th kkoenig 868 71 21 Dec 2023 699th JohandeRuiter 🇳🇱 868 71 14 Sep 2024 699th masinag 🇮🇹 868 71 6 Oct 2024 710th nwellnhof 🇩🇪 867 53 4 May 2022 710th GrayJoKing 🇦🇺 867 53 6 May 2022 712th AlephSquirrel 867 80 20 Apr 2023 712th ashtraypettingzoo 🇺🇸 867 80 1 Apr 2024 714th lukehewittvandy 867 135 18 Jul 2022 714th OriEy 867 135 27 Apr 2023 714th Maximizer02 867 135 8 Jun 2024 714th 0dyse 867 135 23 Apr 2025 718th Shanethegamer 🇺🇸 866 70 12 Dec 2022 718th Alessandro-Balconi 🇮🇹 866 70 26 Dec 2022 720th dieggsy 866 97 8 Oct 2024 721st Andriamanitra 🇫🇮 865 54 21 Jul 2022 721st jared-hughes 865 54 12 Sep 2022 721st OhmNomNom 865 54 7 Oct 2022 721st olleicua 🇺🇸 865 54 21 Jan 2024 721st LostSyntax21 🇬🇧 865 54 12 Mar 2025 721st AbrahamJLR 🇻🇪 865 54 4 Jun 2025 721st vishal-mohanty 865 54 12 days ago 728th dokutan 865 82 1 Jul 2024 729th DialFrost 🇸🇬 864 64 10 Jul 2024 730th MeWhenI 🇻🇦 863 85 27 Jun 2022 730th Shanethegamer 🇺🇸 863 85 15 May 2023 730th albanian-laundromat 863 85 12 days ago 733rd Grrisly 863 114 25 Mar 2024 734th MeWhenI 🇻🇦 863 154 10 Oct 2023 735th mtirado1 862 75 13 Aug 2022 736th deadp4nda 🇩🇪 862 90 26 Apr 2024 736th 123mjb 862 90 23 Jun 2025 736th michelebastione 🇮🇹 862 90 12 days ago 739th TylerBloom 862 96 22 Mar 2024 740th shellbertt 🇨🇦 862 98 9 May 2022 740th iakolzin 862 98 26 May 2022 740th Betuaredead 862 98 5 Jan 2023 740th oceko 862 98 19 Feb 2024 740th dokutan 862 98 17 Mar 2024 740th cuzdav 862 98 4 May 2025 746th steffan-polygolf 861 73 23 Feb 2023 746th MWI-polygolf 861 73 6 Dec 2023 746th HumanoidCPU 861 73 7 May 2024 749th Steffan153 🇫🇮 861 82 23 Feb 2023 750th ovs-code 🇩🇪 861 133 8 Jul 2024 Prev 676–750 of 3,298 Next